Recently, the fine dust produced by automobile non-exhaust systems has drastically increased. Brakes are a major source of fine dust, along with tires. Therefore, this study investigated the pressure drop characteristics of a filter for collecting fine brake dust using only disk rotational flow without a fan or pump. In addition, the effect of the gap between the filter and the disc on the particle behavior and the pressure change inside the filter housing was investigated. Finally, the change in collection efficiency according to filter pressure drop characteristics was examined in a particle collection experiment. As a result, it was found that the build-up in pressure inside the filter housing from the disk rotational flow was insufficient. This meant the brake filter requires a pressure drop as low as possible, as in Filter 1. The pressure drop performance of these filters had a profound effect on the leakage of particles through the housing gap, and the rate of particle concentration reduction inside the housing. Lastly, it was found that to increase particle collection efficiency, it is important to control the particles that rotate in close contact with the disc, which escape through the rear end gap.

最近，汽车非排气系统产生的细尘急剧增加。制动器和轮胎一样是细尘的主要来源。因此，本研究调查了过滤器的压降特性，该过滤器仅使用圆盘旋转流来收集细小的制动粉尘，而无需风扇或泵。此外，还研究了过滤器和圆盘之间的间隙对颗粒行为和过滤器外壳内压力变化的影响。最后，在颗粒收集实验中检查了根据过滤器压降特性的收集效率变化。结果，发现过滤器壳体内部由圆盘旋转流产生的压力积累不足。这意味着制动过滤器需要尽可能低的压降，如过滤器 1。这些过滤器的压降性能对通过外壳间隙的颗粒泄漏以及外壳内的颗粒浓度降低率具有深远的影响。最后，发现为了提高颗粒收集效率，重要的是控制与圆盘紧密接触旋转的颗粒，这些颗粒通过后端间隙逸出。